Home / 18,935.77-28,372.27-11,517.79

Finding the Fourth Proportional to 18,935.77, 28,372.27 and 11,517.79

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Solution

The fourth proportional to 18,935.77, 28,372.27 and 11,517.79 is: 17,257.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,935.77 : 28,372.27 = 11,517.79 : x
  2. Step 2: Convert to fraction form
    18,935.77/28,372.27 = 11,517.79/x
  3. Step 3: Cross multiply
    18,935.77x = 28,372.27 × 11,517.79
  4. Step 4: Simplify right side
    18,935.77x = 326,785,847.68
  5. Step 5: Solve for x
    x = 326,785,847.68/18,935.77
  6. Step 6: Final answer
    x = 17,257.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.